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Dongguan Cangtian Hardware Machinery Co., LTD
KURATATools-Leading Manufacturer of High-Precision Clamping Systems

KURATATools-Leading Manufacturer of High-Precision Clamping Systems

KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.

Home > Products > BT Shrink Fit Tool Holders > BT40 Shrink Fit Holders
BT40 Shrink Fit Holders
  • BT40 Shrink Fit Holders

BT40 Shrink Fit Holders

The BT40 Shrink Fit Holders are designed for high-speed and precision CNC machining. Using advanced Shrink Fit Tooling technology, these holders achieve exceptional runout accuracy (≤3 μm) and superior balance for high RPM operations. By utilizing thermal expansion and contraction, the Shrink Fit Holder provides a full 360° grip on the cutting tool shank, ensuring maximum rigidity and stability during heavy-duty or high-speed milling.
  • Product Details

Our BT40 Shrink Fit Holders are engineered for high-speed CNC machining where accuracy and rigidity matter most. As one of the most reliable Shrink Fit Holder systems, it uses thermal expansion and contraction to clamp the cutting tool with perfect concentricity.
Compared to traditional collet or hydraulic systems, the Heat Shrink Tool Holder offers full 360° contact with the tool shank, ensuring zero slippage, minimal vibration, and long tool life. We provide a complete range of BT40 Shrink Fit Holders, BT30 Shrink Fit Holders, and custom solutions for all CNC Toolholders applications.

BT40 Shrink Fit Holders

Core Advantages

  • Extreme Precision:
    Runout accuracy ≤ 3 μm for superior surface finish and accurate dimensions.

  • Exceptional Clamping Strength:
    Shrink Tool technology ensures uniform grip and rigidity for heavy-duty and high-speed operations.

  • High-Speed Performance:
    Balanced to G2.5 at speeds up to 25,000 RPM for BT40 CNC machines.

  • Premium Alloy Steel:
    Hardened and heat-treated for durability and performance.

  • Slim Design:
    Ideal for tight spaces and deep cavity machining.

  • Extended Service Life:
    Vibration reduction improves tool and holder lifespan.


Applications

  • CNC Milling & Drilling – Perfect for high-speed machining on CNC BT40 machines.

  • Mold & Die Making – Accurate machining of deep cavities and complex shapes.

  • Aerospace Manufacturing – Tight-tolerance cutting of high-strength alloys.

  • Automotive & Medical Components – Reliable clamping for precision parts.


Key Features & Selling Points

  • Full range of BT40 Shrink Fit Holders and BT30 Shrink Fit Holders.

  • Compatible with standard CNC Mill Tool Holders and CNC Toolholders.

  • Suitable for high-speed finishing and heavy cutting.

  • Custom options available for Shrink Fit Tooling.

  • Related products: Shrink Fit Chucks, Shrink Fit Collet, and CNC Hydraulic Chuck.


Industries Served

  • Aerospace & Aviation – High-performance machining.

  • Automotive – Engine and transmission components.

  • Medical – Surgical tools and implants.

  • Mold Manufacturing – Precision mold cavities.


Comparison: Shrink Fit vs Others

  • Shrink Fit Holder vs Collet Chuck:
    Shrink fit offers better runout, rigidity, and balance for high-speed machining.

  • Shrink Fit Holder vs CNC Hydraulic Chuck:
    Shrink fit is best for precision and RPM stability; hydraulic chucks are better for frequent tool changes.


Technical Specifications

ModelClamping Range (mm)Length (mm)Max Speed (RPM)Balance Grade
BT40 Shrink Fit Holder – ShortØ6 – Ø2080 – 10025,000G2.5 @ 25,000 RPM
BT40 Shrink Fit Holder – StandardØ6 – Ø32120 – 16020,000G2.5 @ 20,000 RPM
BT40 Shrink Fit Holder – LongØ6 – Ø25160 – 25018,000G2.5 @ 18,000 RPM


FAQ

Q1: What Are Shrink Fit Holders?
They are Heat Shrink Tool Holders that use thermal expansion and contraction to clamp the tool securely.


Q2: Why Choose BT40 Shrink Fit Holders?
They provide superior precision and rigidity compared to traditional CNC Toolholders.


Q3: Do You Supply BT30 Shrink Fit Holders?
Yes, we offer both BT30 Shrink Fit Holders and BT40 Shrink Fit Holders, plus custom designs.


Q4: What Equipment Is Needed?
An induction heating machine is required for safe installation and removal of the Shrink Tool.

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About

KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.

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